Welcome to the resource topic for 2014/146
Title:
Untappable communication channels over optical fibers from quantum-optical noise
Authors: Geraldo A. Barbosa, Jeroen van de Graaf
Abstract:Coherent light, as produced by lasers, gives rise to an intrinsic noise, known as quantum noise, optical noise or shot noise. AlphaEta is a protocol which exploits this physical phenomenon to obtain secure data encryption or key distribution over a fiber-optic channel in the presence of an eavesdropper. In this paper we focus on the cryptographic aspects of AlphaEta and its variants. Moreover, we propose a new protocol for which we can provide a rigorous proof that the eavesdropper obtains neglible information. In comparison to single-photon quantum cryptography, AlphaEta provide much higher throughputs combined with a well-known technology.
ePrint: https://eprint.iacr.org/2014/146
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